The water column whistle valve is ___ during a hydrostatic test.

Steam boilers are classified as high pressure if steam pressure exceeds ___ psi.

Properly burned fuel always results in carbon particles, soot, or excessive smoke.

The water column whistle valve is ___ during a hydrostatic test.

The work activities of the boiler operator determine the degree of dexterity required and the duration, frequency, and degree of exposure to potential hazards.

When warming up a boiler, the low water fuel cutoff should be blown down before the steam pressure gauge indicates pressure in the boiler.

When warming up a boiler, the low water fuel cutoff should be blown down before the steam pressure gauge indicates pressure in the boiler.

A burner is the heat-producing component of a combustion boiler where fuel is burned.

The work activities of the boiler operator determine the degree of dexterity required and the duration, frequency, and degree of exposure to potential hazards.

An aquastat is a hot water boiler fitting that measures the water temperature in the boiler and controls the temperature by starting and stopping the burner.